Jose palahi atjteb



J. P. AUTER July 21, 1931.

GAS BURNER Filed Feb. 8; 1929 Patented July 21, 1931 PATENT @FFICE zrosn PALAHI AUTER, or GERONA, SPAIN GAS BURNER Application filed February 8, 1929, Serial The atmospheric gas burner according to the present invention has for its object to permit the greatest efficiency to be obtained when the flame is projected and blown with gentleness under the utensils or articles to be heated, and the burner is essentially characterized in that it comprises an expansion chamber and burner orifices or nozzles such that expansion continue-s unimpeded right to the point of issue of the mixture for ignition.

In the application of the invention the burners may take various forms comprising the following features.

a. The avoidance of the possibility in use of the reduction in the passage by which the combustible mixture issues by incrustations and residues that result from the falling of liquids upon the burner.

I). The presence of ribs or parts which support the utensils to be heated near to or in the zone of combustion.

The accompanying detailed drawings illustrate a burner according to the present invention.

Figure 1 is a longitudinal section of a burner.

Figure 2 is a view from below of the cover plate of the construction shown in Figure 1 to a smaller scale.

Figures 3 and 4 are respectively, and to the smaller scale, a plan view and a side elevation of the burner shown in Figure 1 mounted on a supporting body, the latter being represented in section in Figure 4.

The burner represented in Figure 1 is especially suitable for heating substances which may produce froth or may over-flow. The gas injector 1 is disposed at the forward part of the burner; the screw 2 fixes the maximum of convenient consumption and at the same time it secures the injector to the burner by the nut 2. The penetration to a greater or lesser extent of the head of the injector 3 determines the degree of activity of combustion which 1t1s desired to give to the flame. The

No. 338,560, and in Spain April 2, 1928.

primary air fiows by way of the opening 4- into the mixing tube 4 and the mixture which resultspasses into'the chamber? of the head 5 of the burner. In the chamber 7 the perforated cone or screen 10 permits the com- 5 bustible mixture to pass into the .interior, diminishing to a slight extent the velocity of the latter andpreventing backfiring of'the flame, which may produce ignition at the injector. The upper part of the head of the burner 5 is formed as a circular edge 8 and between the edge and the lower part of the cover plateG a throttling passage 9 is formed of which the cross-section effects the controlof the burner. The mixture in leaving the passage 9 is d? verted into the partially external chamber 814t where it undergoes a considerable reduction in speed in consequence of the much greater capacity of this chamber by reference to that of'the passage 9. The saidchamberis 5 of'circular form in so far asitsinternal'pOrtion 8 is concerned, that is to say, at the point of departure from the passage 'whence'it is augmented in cross-section not only by reason that its diameter increases, but also because its height is increased having regard to the exterior formation of the edge 8. The small portion 8 of the speed reducing chamberis in fact circular until it meetsthe internal intersection of theteetli 13from which intersection up to the exterior it is disposed between theteeth 13 and forms the outlets 14, the'crosssection being augmentednp to the combustion outlets which constitute-the external limit of the chamberin question.

In this manner the flames spread very gently, maintaining themselves and-nottending to return 'to the interior. Inaddition, the underside of the cover 6, constituting the topof the velocity-reducingchamber, does not present a uniform horizontal surface,'.but comprises the edges 6 at the exteriorextremity betweentheteeth '13 intended to prevent. incrustations, which may form as the re sultxof the deposit of liquids, from;passing I, falling of liquids.

into the interior of the velocity-reducing chamber so that the cross-section of the throttling passage 9 is not affected and thus neither the volume nor the degree of activity of the combustion of the fiame can be modified. The teeth 13 have radial extensions 15 which augment the supporting surface of the cover plate 6 upon which the utensils to be heated repose. The contact made with the cover plate causes a part of the heat to be transmitted to the utensil thus maintaining moderate temperature so that the secondary air etlectively completes combustion in such manner that the flame spreads gently under the utensil. This arrangement of the cover plate 6 with arms permits it efiectively to support the utensil.

Figure 2 is a view from below of the cover plate 6 and has for its object to show the general disposition of the latter and to show the position of the ribs lt which, arranged above the combustion nozzles oi the burner, are intended to protect the passage 9 against the It will be understood that the number and the form of the teeth 13 can be varied. Finally, Figures 8 and 4c are respectively a plan view and side elevation of the burner in the form in which it can be fixed to a supporting member by such means as screws 16, 16 and 16", or by other suitable means.

I claim 1. An atmospheric gas burner comprising a head formed with an annular throttling passage for the gas mixture, a surrounding expansion chamber in which the velocity of flow of the gas mixture is reduced by expansion and burner outlet orifices leading from the expansion chamber and of large area in relation to the area of the expansion chamber from which the gas mixture flows gently for combustion.

2. An atmospheric gas burner comprising a head and cover plate forming between them an annular gas mixture throttling passage, a concentric and surrounding expansion chamber and burner outlet passages leading from said expansion chamber.

8. An atmospheric gas burner comprising a head and a cover plate adapted to support utensils to be heated, the head and'cover plate forming between them an annular gas mix ture throttling passage, a concentric and surrounding expansion chamber, and burner outlet passages bounded above by downwardly depending ribs for protection of the throttling passage from deposits of liquid and the like.

4. An atmospheric gas burner comprising a head and a cover plate with radiating arms adapted to support utensils to be heated, the

head and cover plate forming between them an annular gas mixture throttling passage, a concentric and surrounding expansion chamber and burner outlet passages leading from said expansion chamber.

'5. An atmospheric gas burner comprising a head and a cover plate forming between them an annular gas mixture throttling passage, a concentric and surrounding expansion chamber and burner outlet passages leading from said expansion chamber, and a perforated screen within said head through which the gas mixture passes before entering the throttling passage.

JOSE PALAHI AUTER. 

